An airplane touches down at a desolate airport in a remote Colorado ski town. Shortly after landing, Dr. Lyle Martin, a world-class infectious disease specialist, is brusquely awakened to shocking news: Everyone not on the plane appears to be dead. The world has gone dark. While they were in the air, a lethal new kind of virus surfaced, threatening mankind's survival, and now Martin—one of the most sought-after virologists on the planet until his career took a precipitous slide—is at the center of the investigation.

Moving at lightning pace from the snowbound Rockies to the secret campus of Google X, where unlimited budgets may be producing wonders beyond our capacity to control, , and establishes him as one of the premier thriller writers working today."